17 June 2026
: Case report 
Chlamydia trachomatis Pneumonia in a 50-Day-Old Full-Term Male Infant Associated With Mucus Plugging of the Left Upper Lobe Bronchus and Left Upper Lobe Atelectasis
Challenging differential diagnosis, Rare disease
Yuan Huang
ABCDEF 1, Meixia Huang AB 1, Liqin Ke EF 1, Shuxian Li ABF 1, Xiaofen Tao B 2, Guohong Zhu AEF 1*
DOI: 10.12659/AJCR.953643
Am J Case Rep 2026; 27:e953643
Table 2 Results of pathogen-related tests during hospitalization.
| Test item | Specimen | Test date | Result |
|---|---|---|---|
| Tuberculosis infection T cell detection | Blood | 15 Jan | Negative |
| 12-pathogen respiratory nucleic acid test (including )* | Sputum | 15 Jan | Negative |
| Blood and sputum culture | Blood & sputum | 15 Jan | Negative |
| DNA | Sputum | 15 Jan | Positive |
| DNA | BALF | 16 Jan | – |
| Culture | BALF | 16 Jan | Negative |
| Tuberculosis smear | BALF | 16 Jan | Negative |
| DNA | BALF | 16 Jan | Negative |
| DNA | BALF | 16 Jan | Negative |
| Note: BALF, bronchoalveolar lavage fluid; –, tests not performed on the corresponding day. * The 12-pathogen respiratory nucleic acid test includes: SARS-CoV-2, common coronaviruses, influenza A and B viruses, parainfluenza virus, , , bocavirus, respiratory syncytial virus, adenovirus, human metapneumovirus, and rhinovirus. | |||